Free: Contests & Raffles.
I would venture to guess that the silver poked a hole into the vac. bag with a missed pin bone. Been there had that happen to me.Hunterman(Tony)
For this very reason, i freeze mine first on a cookie sheet and then vac pak. Bag seals way better around a solid fillet than a fresh soft fillet. I do this with lings, seabass, crab, bread, strawberries etc.